CAJ | 학술논문

基于双相各向同性介质模型,推导了双相各向同性介质中波动方程的有限差分格式,并对其进行了数值模拟.结果表明,弹性波在双相各向同性介质中传播时除了存在常规的快纵波（qP1）和横波以外,还存在慢纵波（qP2）,并且慢纵波的速度明显小于快纵波.
기우쌍상각향동성개질모형,추도료쌍상각향동성개질중파동방정적유한차분격식,병대기진행료수치모의.결과표명,탄성파재쌍상각향동성개질중전파시제료존재상규적쾌종파（qP1）화횡파이외,환존재만종파（qP2）,병차만종파적속도명현소우쾌종파.
Based on the two-phase isotropic model this paper analyses the finite difference format of wave equation,and the numerical simulation of elastic wave is carried out in two-phase media.The results show that besides the conventional fast P wave（qP1） and S wave,there is slow P wave（qP2）,and slow P wave is significantly less than the speed of fast P wave.